Wąsioły was formerly part of the German Empire. In the German Empire, the place was called Wasseln.
The place is now called Wasioły and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wassiol | German Empire | Löbau | before the Versailles Treaty |
| Wąsioły | Poland | Lubawa | after the Versailles Treaty |
| Wasseln | German Empire | Neumark (Westpr.) | 1939 |
| Wąsioły | Poland | Działdowo | 1945 |
| Wasioły | Poland | Ciechanów | 1992 |